- American Association of Petroleum Geologists (AAPG)
 - Formed to foster the spirit of scientific research and to advance the science of geology, particularly as it relates to petroleum, natural gas, other subsurface fluids, and mineral resources. - American Institute of Professional Geologists - Kentucky Section
- Offers a newsletter and listing of geologists by speciality.
- Association of Polish Geomorphologists
- Buffalo Association of Professional Geologists (BAPG)
- Founded in 1985 to promote the geological sciences in Western New York.
- Canadian Council of Professional Geoscientists (CCPG/CCGP)
- Assists its member associations in coordinating standards and other activities related to the licensed practice of geoscience in Canada.
- Environmental and Engineering Geophysical Society (EEGS)
- A professional nonprofit society which promotes the science of geophysics especially as it is applied to environmental and engineering problems.
- Florida Association of Professional Geologists
- Geological Society of America (3)
- Institute of Geologists of Ireland, The
- Professional association for mining, geoscience, petroleum, geology, geophysics, hydrogeology, and engineering geology.
- International Association of Mathematical Geology
- International Union of Geological Sciences
- The IUGS promotes and supports the study of geological problems of world-wide significance and facilitates international and interdisciplinary cooperation in the earth sciences.
- Salt Institute
- Nonprofit association of salt producers founded in 1914. Includes information about salt and its 14,000 known uses.
- Society for Sedimentary Geology, The (1)
- Society of Economic Geologists (1)
- Ukrainian Professional Scientific Public Organization
- Informational portal for Ukraine geologists. Publications in geology, geoecomlogy, hydrogeology, engineering geology, and other earth sciences. Includes a photo gallery and a forum.
- West Texas Geological Society
- Information on the geology and oil and gas resources of the Permian Basin of West Texas and southeast New Mexico.
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